Measuring arms You sure? no offense but I'm a little skeptical since you're only 16 and probably haven't been lifting long
Measuring arms /facepalm How else do you know the size of your muscle? Measure it cold flexed. there.
Measuring arms do both, but take importance of measuring unflexed cold, that's your natural size is it not? Measuring flexed gives inconsistency, you can definitely flex a bicep more than you can flex your calves. And generally they should be the same size if you want correct proportions. If you're in a bodybuilding contest or stuff like that, measure cold flexed, but just in general measure naturally cold unflexed, preferably in the morning when you wake up. http://www.bodybuilding.com/fun/drobson207.htm give that read.
Measuring arms Very good article indeed if you are tracking your stats But on the otherhand I want to emphasize that when somebody says they have 17 inch arms it is generally speaking cold flexed. Hope that clears it up :O
